Pivotal connection



l2 192 Amd 7 H. c. HARRIS PIVOTAL CONNECTION F'i'led April 16, 1926 2Sheets-Sheet 1 e 1.624239 April i2. 1927 H, C. HARRS PIVOTAL CONNECTIONFiled April 16, 1926 2 Sheets-Sheet 2 Patented Apr. 12, 1927.

HOWARD C. HARRIS, OF AKRON, OHIO.

Y PIVOTAL CONNECTION.

prrr-ENT OFFICE.

Application led April 16, 1926. Serial No. 102,435.

This invention relates to pivotal. connections and more p connecting theen s the frame.'

It is one of the objects of the invention to provide an improved type ofpivotal connection that will employ a flexible rubber bushing adapted toaccommodate the relaive oscillations of the parts, by the iiexing of therubber, and also form a cushion which will damp out shocks and preventthem from being transmitted from the spring to the vehicle frame.

Another object of t he invention is to provide an im roved form ofpivotal connection, embo ying a rubber bushing, that will becomparatively simple and inexpensive and that may be easily assembledand disassembled and adjusted to suit the requirements of service. v

Other objects of the invention and the features of novelty will beapparent from the following description taken in connection with theaccompanying drawings, ofl

which:

Fig. 1 is a vertical section through a connection embodying myinvention;

Fig. 2 is a side elevation thereof;

Fi 3 is a view similar to Fig. 1 but showing another form of theinvention;

Fig. f1 is a view similar tov Fig. 1 but showing still another form;

Fig. 5 is .a side elevation of theforin of construction illustrated inFi 4; land Fig. 6 is a fragment of Fig. 5 but illusrating a slightmodification, thereof.

Referring to Figs. 1 and 2 ofthe drawin s,

10 indicates the end portion of a multip efleaf spring of the type thatis commonly used in motor vehicles. It is customary to form the end of`the main leaf' of the spring with an Veye adapted toreceive the pivotbolt which connects the spring with the vehicle frame but, .I prefer touse, instead ofthe usual spring eye, a member 11, which may be in theform of a casting, and which is secured to the spring by means of a bolt12 and astrap 13, which is secured to the member 11 by the bolts 14. Thestrap 13 preferably encloses a plurality of the eaves of the spring and,in the `drawings, I .have shown 'two' leaves enclosed thereby but, inany case, the strap 13 should articularly to means for of a vehiclespring with not cramp the leaves to such an extent as to interfere withtheir freedom of action.

One of the -side members of the vehicle frame is indicated `at 15 andhas secured thereon a bracket 16, by means of rivets or bolts 17.

The bracket 16 has the laterally spaced depending arms 18 and 19 whichare provided with relatively large aligned bores 20 and 21,respectively. The member 11 has a bore 22 that is coaxial with the bores20 and 21 and a pintle 23 extends through these bores, referably beingarranged atthe axis thereo 'and 'being of hexagonal or othernon-circular cross-section. At the opposite sides of the member11,'there are counterbores 24.

A two-part rubber bushing, comprising nl-:lssuEn the members 25 and 26,is arranged between the pintle 23 and the member 11, closely fitting thepintle and also the bore 22, as indicated at 27. The members 25 and 26arel b rs 28 and 30 may be moved in an axial dlrection to compress therubber bushing and thus secure it within the bore 22 and on the pintle23. Set-screws 33 are carried by the plates 30 and engage with the endsof the pintle 23 to hold the latter against axial movement. Theseset-screws are secured in adjustment by the lock-nuts 34.- Whenlthemembers 28 and 30 are being adjusted, the set-screws 33 areunscrewed so as to not engage the ends. of thepintle and, after theadjustments have been completed, the setscrews are screwed up ltightlyagainst. the ends of the pintle and then locked by means of the nuts 34.

The bolts 32 hold the members 28 and 30 from rotating with respect tothe arms 18 and 19 and, since the pintle 23 is non-rotatably held by themembers 28;l the pintle adapted to secure the bushing against movementin the bore 22"01 about the pintle 23, under normal conditions,excessive osc1llation of the member 11 will be accomm'odated, by aslight slipping which will obviate any liability of destruction of thebushing. .The counterbores 24, in the member 11, serve to accuratelyposition the member and alsof prevent axial movement on the bushing.

In the form of the invention rillustrated i in Fig. 3, the constructionis essentiallytheA same as that illustratedin Figs. l1 and 2, with theexception that the counterbores 24, 'of the latter, are omitted and the4member 35, which corresponds to the member 11, has

an internal collar 36 against which the inner ends of the arts 37 and38, of the rubber bushing, va ut, this collar thus se curing the memberagainst axial movement on the bushing. l

In the form of the invention illustrated in Figs. 4 and 5, the member 39which corresponds with the members 11 and 35, o the other constructions,has an internal collar 40 -which serves the same purpose as the collarA66. The bracket arms 41 and 42 are provided with bores through whichthe bushing parts 43 and 44 are insertable, the outer ends of thesebushing parts being positioned in these bores, which are indicated at45. Theaxially movable members 46 lit the bores 45 and `have a slidablebut nonrotatable connection with the `pintle 47.

The ends of the pintle 47 have threaded extensions 48 on whichv theplates 49 are adjustable, these plates and the members 46 having lugs50, which are engaged by bolts 51, for the purpose of non-rotatablysecuring the members 46 and 49' to .the arms 41 and 42. Prior toinserting the bolts 51, the plates 49 may be. turned on the extensions48 by means of af Spanner-wrench which engages the openings for thebolts 51 and, thus` the members 46may be forced inwardly to compress thebushing parts 43 and 44. W'hen the members 46 have been adjusted to givethe proper compression to the rubber bushing, the lugs 50, are' broughtinto alignment and the bolts 51 inserted so as to secure the parts tothe arms 41 and 42. It will be understood that while one of the plates49 is being turned to adjust its companion member 46. the bolts 51 willbe in position to secure the other member 46 against rotation andfsincethe members 46 are both nonmamas@ lng one of them to its supporting arm41 lor 42, as the case may be. rIhis permits the plates 49 to be rotated`independently of leach other and also independently of the members 46and, when the adjustment has been made at one end of the pintle, thcparts at the otherend may then be adjusted.

vIn Fig. 6, I have shown a slight modification of the construction shownin F ig. 5 and, in this construction, the lugs are omitted fromtheplates 52, which correspond with the plates 49 and, the hubs 53 on'the plates are made of hexagonal or other shape so as to convenientlyvreceive a wrench which the plates may be rotated. In this construction.the bolts 51 may be in position While the axial adjustment of themembers 46 is being made and, then after the adjustment has beencompleted, the bolts 51 may be tightened to properly secure the parts.

Having thus described my invention, what y `means whereby said. axiallymovable members are moved to compress said rubber bushing axially andnon-rotatably secured to i said arms. Y

2. In pivotal connections, the combination of a brackethaving spacedarms provided with aligned bores, a member which `is arranged betweensaid arms and has a bore that is coaxial with the bores in said arms, apintle extending through said bores, a rubber bushing between saidpintle and said member and through which the member and pintle areconnected, axially movable memers fitting the bores in said armsand'nonrotatablyl connected with said pintle, means whereby said axiallymovable members are moved to compress said rubber bushing axiallyandnon-rotatably secured to said arms, and means'for securing said pintleagainst axial movements.

3.` In pivotal connections, the combination of a 'bracket having spacedarms provided with' aligned bores, a member which is' ar` rotatablyconnected with said pintle, means whereby said axially' movable membersare moved to compress said rubber bushing axially and non-rotatablysecured to vsait axial movement.

Cil

4. In pivotal connections, the combination of a bracket having spacedarms provided with aligned bores, a member which is arranged betweensaidarms and has a` bore that is coaxial with the bores in said -arms, apintle extending through said bores, a rubber bushing between saidpintle and said member and through which the member and pintle areconnected, said-bushing being so formed thatY it'may be inserted throughthe bore in one of said arms, axially movable members fitting the boresin said arms and non-rotatably connected with said pintle, and meanswhereby said 'axially movable members are moved to compress said rubberbushing yaxially and non-rotatably secured to said arms.

5. In pivotal connections, the combination of a bracket having spacedarms provided with aligned bores, a member which is arranged betweensaid arms and has a bore that is coaxial with the bores in said arms,said 'member also having an internal collar, a pintle extending throughsaid bores, a two-part rubber bushing between said pintle and saidmember and through which the member and pintle are connected, the partsof said bushing being insertable through the bores of ysaid armsandhaving their inner ends in engagement with opposite sides of saidcollar., the outer ends of said bushing parts fitting the bores in saidarms, axially movablel` members fit1 ting the bores in said arms l, andabutting the ends of said bushing and also being non-rotatably connectedwith the said pintle, and bolts for securing said axially movablemembers to said arms. i

6. In pivotal connections, the combination of a bracket havingspac'edarms provided with aligned-'bores, a member which is arranged between'ysaid arms and `has a fbore thaty is coaxial with the bores in said arms,said member also having 'an internal collar, a pintle extendin throughsaid bores, a two-part rubber ushing between said pintle and said memberand through which the member and intle are connected, the parts of saidbushlng being insertable through the bores of said arms and yhavingtheir inner ends in engagement with opposite sidesof said collar, theouter ends of said bushing parts fitting the bores in said arms, axiallymovable members fitting/ the c bores in said arms and abutting the endsof said bushing and also -being non-rotatably` connected with saidpintle, plates having screw thread connection with the ends of saidpintle and abutting the outer sides of said axially movable members, andbolts for non-rotatably securing said axially movable members to saidarms.

7 In pivotal connections, the combination of a bracket h'aving spacedarms provided with aligned bores, a member which is arranged betweensaid arms and has a bore that is coaxial with the bores in saidarms,said member 'also having an internal collar, a pintle extending0 throughsaid bores, a two-part rubber bushing between said pintle and saidmember an through which the member and pintle are connected, the partsof said bushing being insertable through the bores of said arms andhaving their inner ends in engagement with o positeI sides of saidcollar, the outer en s of said bushing parts fitting the bores in saidarms, axially movablemembers fit-ting the bores in said arms andabutting the ends of said bushing and also being non-rotatably connectedwith said pintle, plates havin screw thread connection with the ends` osaid pintle and abutting the outer sides of said axially movablemembers, and bolts extending through said axially movable mem-` bers andsaid plates for` non-rotatably securing them to said arms.

8." In pivotal connections, the combina.- tion of a bracket havingspaced arms rovided with-aligned bores, a member w ich is arrangedbetween said arms and has a bore that is coaxial with the bores of saidarms, a pintle extendin through said bores,

nected with'said pintlelplate having screwV thread connection wit pintleand abut-ting the outer sides of said axially movable members wherebythe latter mav 'be moved to compress said bushing the ends of s'aidaxially, and bolts for non-rotatably securing said axially movablemembers-to said arms.

V9. In pivotal (connections, the combination of a bracket having spacedarms provided with aligned bores, a member whichA is arranged betweensaidarmsv and has a bore that is coaxial fwith the bores of said arms, apintle extendinor through said bores, Y

a twoartrubber buslnng between said pintle an said member and throughwhich the, member and pintle are connected, the arts of said bushingbeing insertable throug the Tbores in said arms, the outer ends of saidbushing parts tting the bores in said arms,

axially movable members fitting the bytes/R I in said arms and abuttingthe ends of said axially, and bolts for4 non-rotatably seembushing andalso being non-rotatably coning said axially movable members and saidnested with said pintle, plates having screw plates to said arms.

thread connection with the ends of said ln testimony whereof, I hereuntoaffix my 5 pintle and abutting the outer sides of said signature.

axially movable members whereby the laty ter may be moved to compresssaid bushing HOWARD C. HABRS.

